[Bug libstdc++/106239] vector::resize(size_type, const value_type&) should not require copy-assignability

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106239

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://cplusplus.github.io/LWG/issue2033

Officially made it CopyInsertable:

Requires: T shall be MoveInsertable into *this and CopyInsertable into *this.

CopyInsertable is basically:
::new((void*)p) T(v)
 (for pre c++20).

So yes it would be invalid.